Global Complex Roots and Poles Finding Algorithm Based on Phase Analysis for Propagation and Radiation Problems

Piotr Kowalczyk

doi:10.1109/tap.2018.2869213

Global Complex Roots and Poles Finding Algorithm Based on Phase Analysis for Propagation and Radiation Problems

Abstrakt

A flexible and effective algorithm for complex roots and poles finding is presented. A wide class of analytic functions can be analyzed, and any arbitrarily shaped search region can be considered. The method is very simple and intuitive. It is based on sampling a function at the nodes of a regular mesh, and on the analysis of the function phase. As a result, a set of candidate regions is created and then the roots/poles are verified using a discretized Cauchy’s argument principle. The accuracy of the results can be improved by the application of a self-adaptive mesh. The effectiveness of the presented technique is supported by numerical tests involving different types of structures, where electromagnetic waves are guided and radiated. The results are verified, and the computational efficiency of the method is examined.

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Autor (1)

Piotr Kowalczyk dr hab. inż.

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Wersja publikacji: Accepted albo Published Version
Licencja: Copyright (2018 IEEE)

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Informacje szczegółowe

Kategoria:

Publikacja w czasopiśmie

Typ:

artykuł w czasopiśmie wyróżnionym w JCR

Opublikowano w:

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION nr 66, strony 7198 - 7205,
ISSN: 0018-926X

Język:

angielski

Rok wydania:

2018

Opis bibliograficzny:

Kowalczyk P.: Global Complex Roots and Poles Finding Algorithm Based on Phase Analysis for Propagation and Radiation Problems// IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION. -Vol. 66, iss. 12 (2018), s.7198-7205

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